diff --git a/TEF6686_ESP32.ino b/TEF6686_ESP32.ino
index 9758d73..b578c92 100644
--- a/TEF6686_ESP32.ino
+++ b/TEF6686_ESP32.ino
@@ -115,6 +115,7 @@ byte SNR;
 byte SNRold;
 byte specialstepOIRT;
 byte stepsize;
+byte fmminstepsize;
 byte deepsleep;
 byte StereoLevel;
 byte subnetclient;
@@ -249,7 +250,7 @@ WiFiUDP Udp;
 
 void setup() {
   setupmode = true;
-  EEPROM.begin(261);
+  EEPROM.begin(262);
   if (EEPROM.readByte(43) != 29) DefaultSettings();
 
   frequency = EEPROM.readUInt(0);
@@ -302,6 +303,7 @@ void setup() {
   colorinvert = EEPROM.readByte(258);
   deepsleep = EEPROM.readByte(259);
   CurrentTheme = EEPROM.readByte(260);
+  fmminstepsize = EEPROM.readByte(261);
 
   LWLowEdgeSet = FREQ_LW_LOW_EDGE_MIN;   // later will read from flash
   LWHighEdgeSet = FREQ_LW_HIGH_EDGE_MAX; // later will read from flash
@@ -340,7 +342,8 @@ void setup() {
         }
       } else {
         if (frequency % 10 != 0) {
-          Round50K(frequency);
+          if (fmminstepsize == 1) Round100K(freq);
+          else Round50K(freq);
         }
       }
       break;
@@ -1264,7 +1267,8 @@ void ModeButtonPress() {
       }
     } else {
       if (frequency % 10 != 0) {
-        Round50K(frequency);
+        if (fmminstepsize == 1) Round100K(freq);
+        else Round50K(freq);
         EEPROM.writeUInt(0, frequency);
       }
     }
@@ -1308,6 +1312,7 @@ void ModeButtonPress() {
     EEPROM.writeByte(258, colorinvert);
     EEPROM.writeByte(259, deepsleep);
     EEPROM.writeByte(260, CurrentTheme);
+    EEPROM.writeByte(261, fmminstepsize);
     EEPROM.commit();
     Serial.end();
     if (wifi) remoteip = IPAddress (WiFi.localIP()[0], WiFi.localIP()[1], WiFi.localIP()[2], subnetclient);
@@ -1366,6 +1371,14 @@ void Round50K(unsigned int freq) {
   }
 }
 
+void Round100K(unsigned int freq) {
+  if (freq % 10 < 5) {
+    frequency = (freq - freq % 10);
+  } else {
+    frequency = (freq - (freq % 10) + 10);
+  }
+}
+
 void Round5K(unsigned int freqAM) {
   if (freqAM % 10 < 3) {
     frequency_AM = (freqAM - freqAM % 10);
@@ -1385,10 +1398,12 @@ void RoundStep() {
       if (frequency >= FREQ_FM_OIRT_START && frequency <= FREQ_FM_OIRT_END) {
         Round30K(freq);
       } else {
-        Round50K(freq);
+        if (fmminstepsize == 1) Round100K(freq);
+        else Round50K(freq);
       }
     } else {
-      Round50K(freq);
+      if (fmminstepsize == 1) Round100K(freq);
+      else Round50K(freq);
     }
     radio.SetFreq(frequency);
   } else {
@@ -1780,6 +1795,13 @@ void ButtonPress() {
               tft.setTextColor(TFT_WHITE);
               if (deepsleep) tft.drawCentreString(myLanguage[language][75], 155, 110, GFXFF); else tft.drawCentreString(myLanguage[language][76], 155, 110, GFXFF);
               break;
+            case 90:
+              tft.setTextColor(ActiveColor);
+              tft.drawCentreString(myLanguage[language][140], 155, 70, GFXFF);
+              tft.drawString("KHz", 170, 110, GFXFF);
+              tft.setTextColor(TFT_WHITE);
+              if (fmminstepsize) tft.drawRightString(String(FREQ_FM_STEP_100K * 10, DEC), 155, 110, GFXFF); else tft.drawRightString(String(FREQ_FM_STEP_50K * 10, DEC), 155, 110, GFXFF);
+              break;
           }
           break;
       }
@@ -2177,6 +2199,13 @@ void KeyUp() {
               tft.setTextColor(TFT_WHITE);
               if (deepsleep) tft.drawCentreString(myLanguage[language][75], 155, 110, GFXFF); else tft.drawCentreString(myLanguage[language][76], 155, 110, GFXFF);
               break;
+            case 90:
+              tft.setTextColor(TFT_BLACK);
+              if (fmminstepsize) tft.drawRightString(String(FREQ_FM_STEP_100K * 10, DEC), 155, 110, GFXFF); else tft.drawRightString(String(FREQ_FM_STEP_50K * 10, DEC), 155, 110, GFXFF);
+              if (fmminstepsize) fmminstepsize = 0; else fmminstepsize = 1;
+              tft.setTextColor(TFT_WHITE);
+              if (fmminstepsize) tft.drawRightString(String(FREQ_FM_STEP_100K * 10, DEC), 155, 110, GFXFF); else tft.drawRightString(String(FREQ_FM_STEP_50K * 10, DEC), 155, 110, GFXFF);
+              break;
           }
           break;
       }
@@ -2568,6 +2597,13 @@ void KeyDown() {
               tft.setTextColor(TFT_WHITE);
               if (deepsleep) tft.drawCentreString(myLanguage[language][75], 155, 110, GFXFF); else tft.drawCentreString(myLanguage[language][76], 155, 110, GFXFF);
               break;
+            case 90:
+              tft.setTextColor(TFT_BLACK);
+              if (fmminstepsize) tft.drawRightString(String(FREQ_FM_STEP_100K * 10, DEC), 155, 110, GFXFF); else tft.drawRightString(String(FREQ_FM_STEP_50K * 10, DEC), 155, 110, GFXFF);
+              if (fmminstepsize) fmminstepsize = 0; else fmminstepsize = 1;
+              tft.setTextColor(TFT_WHITE);
+              if (fmminstepsize) tft.drawRightString(String(FREQ_FM_STEP_100K * 10, DEC), 155, 110, GFXFF); else tft.drawRightString(String(FREQ_FM_STEP_50K * 10, DEC), 155, 110, GFXFF);
+              break;
           }
           break;
       }
@@ -2982,7 +3018,7 @@ void BuildMenu() {
   switch (menupage) {
     case 1:
       tft.drawRightString("dB", 305, 30, GFXFF);
-      tft.drawRightString("MHz", 305, 52, GFXFF);
+      tft.drawRightString("MHz", 305, 50, GFXFF);
       tft.drawRightString("MHz", 305, 70, GFXFF);
       tft.drawRightString("MHz", 305, 90, GFXFF);
       tft.drawRightString("dB", 305, 110, GFXFF);
@@ -3065,12 +3101,15 @@ void BuildMenu() {
       if (specialstepOIRT) tft.drawRightString(myLanguage[language][42], 305, 210, GFXFF); else tft.drawRightString(myLanguage[language][30], 305, 210, GFXFF);
       break;
     case 4:
+      tft.drawRightString("KHz", 305, 90, GFXFF);
       tft.drawString(myLanguage[language][77], 14, 30, GFXFF);
       tft.drawString(myLanguage[language][70], 14, 50, GFXFF);
       tft.drawString(myLanguage[language][74], 14, 70, GFXFF);
+      tft.drawString(myLanguage[language][140], 14, 90, GFXFF);
       tft.setTextColor(PrimaryColor);
       tft.drawRightString(CurrentThemeString, 305, 30, GFXFF);
       if (deepsleep) tft.drawRightString(myLanguage[language][75], 305, 70, GFXFF); else tft.drawRightString(myLanguage[language][76], 305, 70, GFXFF);
+      if (fmminstepsize) tft.drawRightString(String(FREQ_FM_STEP_100K * 10, DEC), 265, 90, GFXFF); else tft.drawRightString(String(FREQ_FM_STEP_50K * 10, DEC), 265, 90, GFXFF);
       break;
   }
   analogWrite(SMETERPIN, 0);
@@ -4641,7 +4680,8 @@ void TuneUp() {
           temp = FREQ_FM_STEP_50K;
         }
       } else {
-        temp = FREQ_FM_STEP_50K;
+        if (fmminstepsize == 1) { temp = FREQ_FM_STEP_100K; }
+        else { temp = FREQ_FM_STEP_50K; }
       }
     }
   }
@@ -4720,7 +4760,8 @@ void TuneDown() {
           temp = FREQ_FM_STEP_50K;
         }
       } else {
-        temp = FREQ_FM_STEP_50K;
+        if (fmminstepsize == 1) { temp = FREQ_FM_STEP_100K; }
+        else { temp = FREQ_FM_STEP_50K; }
       }
     }
   }
@@ -5055,5 +5096,6 @@ void DefaultSettings() {
   EEPROM.writeByte(258, 0);
   EEPROM.writeByte(259, 0);
   EEPROM.writeByte(260, 0);
+  EEPROM.writeByte(261, 0);
   EEPROM.commit();
 }
diff --git a/src/constants.h b/src/constants.h
index f734206..301546a 100644
--- a/src/constants.h
+++ b/src/constants.h
@@ -12,8 +12,9 @@
 #define FREQ_MW_STEP_9K            9
 #define FREQ_MW_STEP_10K           10
 #define FREQ_SW_STEP_5K            5
-#define FREQ_FM_STEP_50K           5
 #define FREQ_FM_STEP_30K           3
+#define FREQ_FM_STEP_50K           5
+#define FREQ_FM_STEP_100K          10
 
 #define FREQ_LW_LOW_EDGE_MIN       144
 #define FREQ_LW_HIGH_EDGE_MAX      519
diff --git a/src/language.h b/src/language.h
index 7c3d336..1c1b7e3 100644
--- a/src/language.h
+++ b/src/language.h
@@ -1,6 +1,6 @@
 // [number of languages][number of texts][max. length of text]
 
-static const char myLanguage[9][140][85] = {
+static const char myLanguage[9][141][85] = {
   { "English",                        // English
     "Rotary direction changed", // 1
     "Please release button", // 2
@@ -140,7 +140,8 @@ static const char myLanguage[9][140][85] = {
     "Georgian", // 136
     "Bulgarian", // 137
     "Armenian", // 138
-    "Arabic" // 139
+    "Arabic", // 139
+    "FM min stepsize" // 140
   },
 
   { "Nederlands",                     // Dutch
@@ -282,7 +283,8 @@ static const char myLanguage[9][140][85] = {
     "Georgisch", // 136
     "Bulgaars", // 137
     "Armeens", // 138
-    "Arabisch" // 139
+    "Arabisch", // 139
+    "FM min stepsize" // 140
   }, //
 
   { "Polski",                         // Polish
@@ -424,7 +426,8 @@ static const char myLanguage[9][140][85] = {
     "Georgian", // 136
     "Bulgarian", // 137
     "Armenian", // 138
-    "Arabic" // 139
+    "Arabic", // 139
+    "FM min stepsize" // 140
   },
 
   { "Hrvatski",                       // Croatian
@@ -566,7 +569,8 @@ static const char myLanguage[9][140][85] = {
     "Georgian", // 136
     "Bulgarian", // 137
     "Armenian", // 138
-    "Arabic" // 139
+    "Arabic", // 139
+    "FM min stepsize" // 140
   },
 
   { "Ελληνικά",                       // Greek
@@ -708,7 +712,8 @@ static const char myLanguage[9][140][85] = {
     "Γεωργιανά", // 136
     "Βουλγαρικά", // 137
     "Αρμενικά", // 138
-    "Αραβικά" // 139
+    "Αραβικά", // 139
+    "FM min stepsize" // 140
   },
 
   { "Romana",                         // Romanian
@@ -850,7 +855,8 @@ static const char myLanguage[9][140][85] = {
     "Georgian", // 136
     "Bulgarian", // 137
     "Armenian", // 138
-    "Arabic" // 139
+    "Arabic", // 139
+    "FM min stepsize" // 140
   },
 
   { "Deutsch",                        // German
@@ -992,7 +998,8 @@ static const char myLanguage[9][140][85] = {
     "Georgian", // 136
     "Bulgarian", // 137
     "Armenian", // 138
-    "Arabic" // 139
+    "Arabic", // 139
+    "FM min stepsize" // 140
   },
 
   { "Czech",                          // Czech
@@ -1134,7 +1141,8 @@ static const char myLanguage[9][140][85] = {
     "Georgian", // 136
     "Bulgarian", // 137
     "Armenian", // 138
-    "Arabic" // 139
+    "Arabic", // 139
+    "FM min stepsize" // 140
   },
 
   { "Slovak",                         // Slovak
@@ -1276,6 +1284,7 @@ static const char myLanguage[9][140][85] = {
     "Georgian", // 136
     "Bulgarian", // 137
     "Armenian", // 138
-    "Arabic" // 139
+    "Arabic", // 139
+    "FM min stepsize" // 140
   },
 };